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#!/bin/bash
##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
# Run a lmbench memory bandwidth benchmark in a host and
# output in json format the memory size in megabytes and
# memory bandwidth in megabytes per second
set -e
SIZE=$1
TEST_NAME=$2
WARMUP=$3
NODE_CPU_ARCH="$(uname -m)"
# write the result to stdout in json format
output_json()
{
read DATA
echo $DATA | awk '/ /{printf "{\"size(MB)\": %s, \"bandwidth(MBps)\": %s}", $1, $2}'
}
if [ "${NODE_CPU_ARCH}" == "aarch64" ]; then
REL_PATH="bw_mem"
else
REL_PATH="x86_64-linux-gnu/bw_mem"
fi
/usr/lib/lmbench/bin/${REL_PATH} -W $WARMUP ${SIZE}k $TEST_NAME 2>&1 | output_json
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